Aluminium fracture toughness

Laminate, aluminium foil, polymer, crack, fracture toughness INTRODUCTION... 

Table 1. Mechanical properties of selected pressure-infiltrated ceramic particle reinforced aluminium composites Young s modulus (E), yield and ultimate tensile strengths (aQ2, Outs), tensile elongation ( 0, and fracture toughness parameters. Toughness Kic was measured from J-R curves on pure A1 matrix composites and by chevron-notch fracture testing on Al-Cu...

Zun Zunjarrao, S. C., Singh, R. P. Effect of silane treatment on fracture toughness of epoxy-aluminium nano/micro composites. In Proc. SEM X. Intern. Congress Exposition on Experimental Applied Mechanics. Costa Mesa (2004), 6 pages. 

Prielipp, H., Knetchtel, M., Claussen, N., Streiffer, S.K., Mullejans, H., Ruble, M., and Roedel, J. (1995) Strength and fracture toughness of aluminium/alumina composites with interpenetrating networks. Mater. Sci. Eng. A, 197, 19-31. 

TiB2 and ZrBg ceramics with admixed a-BN, besides their corrosion resistance toward molten Al, show electrical conductivity, and are primarily used in the (thermal) evaporation of aluminium and in the continuous casting of steel. Other materials contained in these composites include SiC, AIN, Si, B4C, and Y2O3 [232 to 241]. Sinters based on TiC and containing a-BN have high hardness and fracture toughness and low electrical resistivity [286]. 

The interlaminar fracture toughness, in terms of strain energy release rate, has been determined by means of the Width Tapered Double Cantilever Beam (WTDCB) fracture specimen (8). In our case a thick aluminium WTDCB is adhesive-bonded to the thin laminates. 

For safety reasons, only special materials, such as austenitic, low temperature steels or aluminium alloys are used for cryogenic liquefied gases, that still dispose of sufficient fracture toughness at low design temperatures of down to 4 K (liquid He). 

Davidson, D. L. (1989). Fracture Surface Roughness As a Gauge of Fracture Toughness Aluminium-Particulate SiC composites. J. Mater. Sci., 24(3), 681-687. 

ASTM B646-04 Standard Practice for Fracture Toughness Testing of Aluminium AUoys... 

ASTM B909-00 Standard Guide for Plane Strain Fracture Toughness Testing of Non-Stress Relieved Aluminium Products... 

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